Created SerializedUserDataManager.

ios/web/public/serialized_user_data_manager.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_WEB_PUBLIC_SERIALIZED_USER_DATA_MANAGER_H_
+#define IOS_WEB_PUBLIC_SERIALIZED_USER_DATA_MANAGER_H_
+
+#include "base/supports_user_data.h"
+
+#if defined(__OBJC__)
+@protocol NSCoding;
+@class NSDictionary;
+@class NSString;
+typedef id<NSCoding> SerializedUserDataType;
+#else
+class NSDictionary;
+class NSString;
+typedef void* SerializedUserDataType;
+#endif  // defined(__OBJC__)
+
+namespace web {
+
+class WebState;
+
+// Class that manages arbitrary persistent data that can be added to a
+// NavigationManager.
+class SerializedUserDataManager {
+ public:
+  virtual ~SerializedUserDataManager() {}
+
+  // Returns a SerializedUserDataManager for |web_state|, lazily instantiating
+  // one if necessary.  |web_state| must be non-null.
+  static SerializedUserDataManager* FromWebState(WebState* web_state);
+
+  // Associates |data| with the NavigationManager under |serialization_key|.
+  // |data| is retained by the manager, and |serialization_key| is copied.  If
+  // |data| is nil, the value previously stored under |serialization_key| is
+  // removed. |serialization_key| must be non-empty.
+  virtual void SetValueForSerializationKey(SerializedUserDataType data,
+                                           NSString* serialization_key) = 0;
+
+  // Returns the value associated with |serialization_key|.  |serialization_key|
+  // must be non-empty.
+  virtual SerializedUserDataType GetValueForSerializationKey(
+      NSString* serialization_key) const = 0;
+
+  // Returns an NSDictionary containing copies of the serializable key value
+  // pairs.
+  virtual NSDictionary* GetSerializationDictionary() const = 0;
+
+  // Adds values and serialization keys from |dictionary| to the manager.
+  // |dictionary| must be non-nil.
+  virtual void AddValuesFromDictionary(NSDictionary* dictionary) = 0;
+};
+}

[Eugene But (OOO till 7-30), 2015/09/24 21:39:25]

NIT: // namespace web

+
+#endif  // IOS_WEB_PUBLIC_SERIALIZED_USER_DATA_MANAGER_H_